These resources are utilized by members of the Eastern European Special Interest Group to research their ancestry. Many of the Facebook groups allow you to learn about the region and its history.
Czechoslovak Genealogy Society International
https://cgsi.org/ - an excellent organization for those researching their Czech or Slovak heritage.
Many ancestry and genealogy groups have pages on Facebook. Here is a short list which we recommend.
If you do not see one that matches your interests, you may want to search on Facebook to see if such a group exists.
You may also want to search for the town(s) on Facebook where your ancestors lived. These sites are similar to our local Shaler, Allison Park, Ross, etc. Facebook groups that are dedicated to their towns and local information. They may, however, give you insight into the area where your ancestors lived.
In addition, these websites offer access to many diverse records:
Ancestry, MyHeritage, FamilyTreeDNA, 23andMe, and FamilySearch.