You can also check out Judicial Watch. They have been suing for years forcing counties and states to clean their voting rolls. They also have been a leader in getting FOIA records. Their legal team faces extreme opposition from the corrupt deep state, but they keep pushing ahead and much of the information such as Hillary’s emails was a result of their efforts. They also have weekly update videos that are a good source of information. They usually have some suggestions on how you can help (petitions, sending emails, etc...). They are non-profit so you can support them with a contribution if you feel it would help in an area of interest to you.
You can also support Judicial Watch. They have been suing for years forcing counties and states to clean their voting rolls. They also have been a leader in getting FOIA records. Their legal team faces extreme opposition from the corrupt deep state, but they keep pushing ahead and much of the information such as Hillary’s emails was a result of their efforts.