Tools
Useful cornersof the internet.
A personal bookmark shelf for the references, utilities, guides, and calculators I actually return to.
and counting
01 / Reference bench
Engineering & Repair
Calculations, technical references, training, manuals, and practical repair knowledge.
Engineering ToolBox
Technical properties, formulas, reference tables, and engineering calculators.
learncheme.comLearnChemE
Chemical engineering simulations, screencasts, virtual labs, and course resources.
plciosim.complcIOsim
A PLC I/O simulator for practicing ladder logic and controls fundamentals.
rapidtables.comRapidTables
Quick calculators, unit conversions, and electrical and mathematical references.
checalc.comCheCalc
Chemical engineering calculations for process equipment and plant design.
icrank.comiCrank
Machine-design guides, equations, and references for mechanical engineering.
manualslib.comManualsLib
A searchable library of product manuals, service documents, and user guides.
ifixit.comiFixit
Free, step-by-step repair manuals and troubleshooting guides.
gowelding.orgGoWelding
Practical guides to welding processes, qualifications, careers, and equipment.
02 / Digital drawer
Software Tools & Guides
Utilities that save clicks and teachers who make spreadsheets and data tools easier to understand.
Smallpdf
Compress, convert, merge, split, edit, and sign PDF files online.
ninite.comNinite
Install or update multiple Windows applications in one clean pass.
chandoo.orgChandoo.org
Excel, Power BI, dashboard, charting, and data-analysis tutorials.
people.highline.eduExcelIsFun
Mike Girvin’s Excel, Power Query, and Power BI lessons and downloadable files.
03 / Money desk
Finance / Investing
Calculators, valuation material, datasets, and market research for doing the homework.
DQYDJ Calculators
Finance, investing, income, and statistics calculators backed by public data.
pages.stern.nyu.eduDamodaran Online
Aswath Damodaran’s valuation spreadsheets, datasets, lectures, and notes.
marketchameleon.comMarket Chameleon
Stock and options research, screeners, market data, and trading analytics.