Tell us about yourself!
Here are some guides for microscopy.This is from an amateur science site, but I've found it very usefull:http://www.microscopy-uk.org.uk/pond/Here is a useful dichotomous key for algae:http://www.algalweb.net/search1.htmSome other government publications mostly on algae that I've found over the years. Sometimes too technical or detailed:http://www.townofchapelhill.org/home/showdocument?id=28866https://pubs.usgs.gov/of/2015/1164/ofr20151164.pdf https://pubs.er.usgs.gov/publication/wsp2079http://publications.gc.ca/collections/collection_2011/agr/A125-8-2-2011-eng.pdf
Also, you can usually find an expert to hwlp with ID on the Foldscope (the origami microscope) group on iNaturalist wildlife logging site: https://www.inaturalist.org/projects/foldscope
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