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An R programming introduction for non-programmers

Turns any subject into a structured course with five tiers and hands-on labs.

AI investing tools and managed portfolios

AI tools directory with hands-on reviews, comparisons, and free developer utilities.

Turn book covers into mockups, box sets and promotional graphics.

Search book and author records in batches and return work, edition, and cover identifiers.

Book reviews, background reading and club discussions

A library of worksheets, learning games, lesson plans and hands-on activities for children.

Hands-on literacy printables for alphabet work, phonics, spelling, reading and writing.

Hands-on study of computing and cybersecurity foundations

Cloud learning and certification preparation with courses, practice tests and hands-on labs.

Short book reviews delivered as a literary newsletter

The American Museum of Natural History's science website for children, with reading, games and hands-on activities.

Place an existing book cover in a template and export a promotional image.

Set a limit order price from the order book

Bring-your-own-book gatherings with no assigned reading

Visualize the historical limit order book as a liquidity heatmap

Reviews, interviews and reading conversations

Book-club reading guides and monthly selection ideas

Compare new, used, rental and digital book offers

Open source order-book infrastructure for Solana

Assemble Markdown chapters into a searchable online book or technical guide.

Organize book-club meetings, polls and shared reading

Book-collection software with ISBN lookup