Free AI library

Learn AI.Free forever.

1019 plain-English guides, structured learning paths, and an open library — built by an independent 501(c)(3) nonprofit so anyone can understand modern AI.

1019Free guides
9Topic tracks
~2 minPer guide
~34hReading time

Start here

Five outcome-based courses

Each course includes explicit outcomes, mapped competencies, practice activities, and an applied capstone.

Topic tracks

Browse by track

Jump into the area you care about. Every track has multiple plain-English guides.

Full library

All guides

1019 of 1019 guides shown. Filter by track or search above.

Visual AI

StyleGAN Architecture

StyleGAN is a generative adversarial network from NVIDIA that produces strikingly realistic faces and objects by injecting style information at every layer.

2 min readRead
Visual AI

Progressive Growing of GANs

Progressive growing trains a GAN by starting at tiny resolutions and gradually adding layers to reach high-resolution images.

2 min readRead
Visual AI

AnimateDiff Motion Generation

AnimateDiff is a technique that adds motion to existing text-to-image diffusion models like Stable Diffusion, turning still-image generators into short video…

2 min readRead
Visual AI

DETR Transformer Detection

DETR (DEtection TRansformer) reframes object detection as a direct set-prediction problem solved with a transformer, removing hand-designed steps like anchor…

2 min readRead
Visual AI

Open-Vocabulary Object Detection

Open-vocabulary object detection lets a model find and box objects described by arbitrary text, including categories it never saw labeled during training.

2 min readRead
Industries

AI in Railways

AI helps railways predict equipment failures, optimize train schedules, and improve safety across vast networks of tracks, signals, and rolling stock.

2 min readRead
Industries

AI in Public Transit

AI helps buses, subways, and ride services run on time, predict demand, and adapt routes to how people actually travel.

2 min readRead
Industries

AI in Mining

AI helps mining companies find ore deposits, run autonomous haul trucks, and keep workers out of the most dangerous parts of the operation.

2 min readRead
Technical

Imitation Learning

Imitation learning teaches an AI to perform a task by copying expert demonstrations instead of learning from trial-and-error rewards.

2 min readRead
Technical

Inverse Reinforcement Learning

Inverse reinforcement learning (IRL) flips standard RL: instead of being given a reward and finding a policy, it watches expert behavior and infers…

2 min readRead
Technical

Offline Reinforcement Learning

Offline reinforcement learning trains agents purely from a fixed, previously collected dataset, with no live interaction with the environment.

2 min readRead
Visual AI

Photogrammetry

Photogrammetry turns ordinary overlapping photographs into accurate 3D models, maps, and measurements.

2 min readRead

Finished reading? Prove it.

Check what you learned with topic quizzes, then explore our structured courses and current certification requirements. Core guides remain free to read.