Coming from a developing country, the prospect of spending money on data, software/code, and journals was quite intimidating for me. That’s why I consistently promote the idea of open science. Here is an article I and my team have advocated for open science.
List of resources for undergrad and graduate students
Data/Sources
TADA Shiny [Download Water Quality Data]
Code/Programs
Jupyter Notebook (python coding)
Inkscape (free version of adobe illustrator)
Connedtedpapers.com (Explore connected papers in a visual graph)
Foldable Aquifer
(Make your own paper aquifer models)
Delineate a watershed (within USA), Streamstats
Forum/Conference/Meeting
American Geophysical Union (AGU)
Geological Society of America (GSA)