Hand-picked study packs — one subject each, written up so you know what you are getting. Browse 31 packs — preview the cards before you commit.
The Python a working developer actually reaches for: variables and control flow, functions and scope, the data structures you pick between daily, classes, exceptions, and file handling. Written for someone going from "I can follow a tutorial" to "I can read someone else's code".
Master the art of crafting effective prompts. 100 cards covering zero-shot, few-shot, chain-of-thought, role prompting, output formatting, and advanced techniques for getting the best results from AI models.
Learn exactly how to prompt Claude Code for maximum productivity. 100 cards covering file operations, debugging, refactoring, testing, security reviews, and advanced agentic workflows.
What an agent actually is once you strip the marketing off it: tool use, planning loops, memory, multi-agent handoffs, and the failure modes nobody demos. For people who have used an agent and now have to build one.
Joins that do what you meant, indexes that actually get used, normalisation you can explain in an interview, and the query patterns that come up in every reporting task. Start here before touching an ORM.
Closures, the event loop, promises and async/await, prototypes, and the ES6+ syntax you will read in every codebase. The parts that make JavaScript surprising, drilled until they stop surprising you.
Interview-shaped recall: sorting and searching, trees and graphs, hash maps, dynamic programming, and Big-O you can reason about out loud. Each card is a question you might be asked at a whiteboard.
Branching, merging, rebasing, and the commands you reach for when something has gone wrong. Built around what teams actually do to a repository rather than the subset of Git a tutorial covers.
Resources and verbs, status codes that mean what they say, authentication, pagination, versioning, and the design decisions you have to defend in review. For anyone shipping an API other people will consume.
The CIA triad, common attack vectors, encryption in practice, network defence, and how incident response actually runs. The vocabulary and mental models every IT role now assumes you have.
Core AWS services and what each is actually for: compute, storage, networking, IAM, and the pricing model that catches people out. Aimed at the Cloud Practitioner level and at anyone inheriting an AWS account.
Exam-shaped drilling across all five SY0-701 domains: threats and attacks, architecture, operations, governance, and risk. Recall practice for the acronym-heavy material the exam expects you to know cold.
The PMBOK scaffolding the exam is built on: five process groups, ten knowledge areas, and which process belongs where. The part candidates lose marks on because it is memorisation, not judgement.
Roles, events, artifacts, and the commitments that bind them, sourced from the Scrum Guide rather than from how your last team did stand-ups. Built for the PSM I question style, which punishes folk-Scrum answers.
Roots, prefixes and suffixes assembled into the words used on a chart, so an unfamiliar term becomes decodable rather than memorised. The groundwork every clinical course assumes you did before it started.
Assessment sequences, airway and trauma management, medical emergencies, and the protocol details the NREMT cognitive exam tests. Recall practice for the material you are expected to produce under time pressure.
The drugs in an EMT scope: indication, dose, route, contraindications, and what to watch for after you give it. Structured for the kind of recall that has to survive a moving ambulance.
Order of draw, tube additives, patient identification, complications and the safety rules certification boards examine. Aimed at NHA and ASCP candidates who need the details exact rather than approximately right.
Mechanism, class effects, and the adverse reactions Step 1 keeps asking about, organised by system rather than alphabetically. High-yield in the literal sense: the drugs that actually recur on the exam.
The first few hundred German words that unlock ordinary sentences, with the article carried along because in German the article is part of the word. Built for A1 learners who want usable vocabulary before grammar.
The hundred verbs that carry most everyday Spanish, drilled in the present tense including the irregulars that refuse to follow the pattern. Conjugation practice narrow enough to finish and broad enough to matter.
Both kana syllabaries, character by character, including the combinations and the pairs that look alike until you have seen them enough times. The prerequisite step before any Japanese textbook stops using romaji.
Ordering, asking, paying, and reading a menu without guessing, plus the courtesies that change how the exchange goes. Narrow by design: one situation, learned well, before a trip.
Hangul, core vocabulary, and the sentence patterns and politeness levels that Korean makes you choose from the first sentence. A starting point that does not pretend the honorific system can be skipped.
Delegation, feedback, motivation, and the difficult conversations that define the job, framed as things you decide rather than traits you have. For first-time managers and anyone leading without the title.
How a talk is built and how it is delivered: structure that holds attention, openings that earn it, and what your body is saying while you speak. Practical enough to change the next presentation you give.
Anchoring, timing, handling the first-number question, and what to do when the answer is no. Rehearsal material for a conversation most people have rarely and expensively.
The specific behaviours that make someone feel heard - reflecting, summarising, staying quiet longer than is comfortable - separated from the vague advice usually given about listening. Core skill for coaches and managers.
The questions that recur, the structure that keeps an answer from wandering, and the ones you should be asking back. Preparation you can do in short sessions across the week before an interview.
Starter maintenance, hydration, bulk fermentation, shaping and bake, plus how to read a loaf that went wrong and fix the next one. For bakers past their first loaf and tired of contradictory advice.
Soil, watering, propagation, pruning and pests, with the reasoning behind each practice rather than a calendar to follow. Useful whether the garden is a balcony or an allotment.