While researching your topic, some good basic practices include:

Read papers in the bibliography

Papers will cite other papers. If you want to learn more about a given topic, dig into the citation list.

Online Resources

The best online encyclopedia of philosophy:

Table of Contents

philosophy of logic and language (Wilfrid Hodges and Therese-Anne Druart)

plato.stanford.edu

The second best online encyclopedia of philosophy:

Internet Encyclopedia of Philosophy

iep.utm.edu

Google’s tool to search scholarly papers: