I’m needing to give a shiur on a woman in Tanach, however as I tentatively do not have proper sefarim to research the topic more thoroughly, I need to know whether Chabad.org is a reliable website to get the information that I need? I once heard that most websites that talk about the Torah are Apikorsus?
Yutorah.org is pretty reliable.
For Tanakh, I would strongly recommend no links. It is the site for Yeshivat Har Etzion, one of the few yeshivot that teaches a lot of Tanakh. Its former Roshei Yeshivot, Rav Amital z’tz’l and Rav Lichtenstein, still alive but taking a much less active role today, were two of the leading dati leumi rabbis in the world, and respected by the charedi world as well. It has a huge amount of material on Nach.
yutorah.org is a fabulous resource, but it is mostly audio shiurim rather than printed sources. You will need to live as long as Moshe Rabbeinu to go through all their material.
Chabad.org has the Jewish Press translation of Tanakh, and the Touger translation of Rambam Mishnah Torah. Those are good translations, probably better than the JPS. Their commentary would of course reflect the Lubavich perspective.
myjewishlearning.com is a non-orthodox site.
Hope this helps!
Try finning an encyclopedia on Biblical personalities.