Mulligan Monster Internet Atlas
Find useful websites without the noise.
Explore human-reviewed tools, guides, and communities for learning, researching, building, and getting things done.
A few good places to begin
Explore reviewed guides
Choose a guide to see useful starting points, practical context, and resources reviewed by an editor.
Free Language Learning Websites
Substantial free courses for listening, vocabulary, grammar, and practical comprehension.
Free Cybersecurity Checkup Tools
Public tools for checking breach exposure, suspicious files or URLs, and basic website security configuration.
Open Image Libraries with Reuse Information
Large cultural collections that provide rights or reuse information with individual images.
Free Coding Practice and Learning Websites
Structured lessons, documentation, and practice for learning web development and programming.
How to Become an HVAC Technician: Training, Schools & Jobs
A practical guide to HVAC training, schools, job searches, and hiring qualified home service help.
Learn Electrical Work: Training, Apprenticeships, Jobs, and Hiring an Electrician
A practical guide to electrician training, apprenticeships, job searches, and safely hiring qualified electrical help.
Recently reviewed resources
Browse all resourcesExamsLib Electrician Exam Preparation
Supplemental electrician licensing-exam practice with explanations, selected state pages, free tests, and optional premium question sets.
IRS Publication 551: Basis of Assets
Understanding cost basis and adjusted basis
IRS Publication 527: Residential Rental Property
Federal rental-property tax fundamentals
IRS Publication 544: Sales and Other Dispositions of Assets
Understanding tax treatment when investment property changes hands
IRS Publication 559: Survivors, Executors, and Administrators
Understanding federal estate-administration basics
CFPB: What Is a Home Equity Loan?
Understanding collateralized borrowing against a home
FINRA: Securities-Backed Lines of Credit
Learning the mechanics and risks of portfolio-backed credit
Investor.gov: Understanding Margin Accounts
Understanding general leverage and collateral risk
Browse subjects
- Sports 55 resources
- Technology 44 resources
- Skilled Trades 28 resources
- Education 23 resources
- History 12 resources
- Geography 11 resources
- Government and Data 11 resources
- Arts and Culture 11 resources
- Writing 10 resources
- Science 9 resources
- Home 3 resources
- Finance 3 resources
Useful context, not just links
Selected by people
Public resources are reviewed before they appear in the Atlas.
Explained clearly
Each listing says what it is best for and notes important limitations.
Checked over time
Destinations are revisited so broken or outdated resources can be reviewed.