Does anyone have a source for a reliable table of personal pronoun declensions?
Also, can anyone tell me if the go/jego duality is a case thing or if they're interchangeable?
This page has more of pronouns https://en.wiktionary.org/wiki/Appendix:Polish_pronouns
This one looks ok: http://www.polish-translators.com/zaimki.html
It also answers your question: "The short forms (mi, cię, ci, go and mu) are used after verbs; they cannot be used after prepositions or in stressed or emphasized positions (e.g., Widziałem go. Jego widziałem.)."