2020 has brought some simplification to searching for NOTAMs for your UAS flight. Almost all NOTAMs can be found from one search page now. A good way to start is to use the “Geography” search within a certain distance of an airport using the 3 letter identifier for the airport. This method seems to capture the best results if you filter by checking Aerodrome (AD), airspace (airspace and TFR), chart, GPS, and Security. This should cover you pretty well for UAS ops, and the one stop shopping style is a great improvement over the recent past. The link is listed below. It may be hard to translate the NOTAMs at first, but with a little practice you can tell if it is relevant to your UAS flight.
Also listed is a link to TFRs. TFRs are actually FDC NOTAMs, so you will see the TFRs if you follow the NOTAM instructions above. The TFR link just gives you more targeted information and has an easy option to search by state.
NOTAMs for UAS flights
https://notams.aim.faa.gov/notamSearch/nsapp.html#/
Favorite way to find TFRs for UAS flights
https://tfr.faa.gov/tfr2/list.html
Hard to find link to Sectional charts
https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/vfr/
Fast view of Sectional charts
Hard to find link to Chart Supplement (Airport Facility Directory)
https://www.faa.gov/air_traffic/flight_info/aeronav/digital_products/dafd/
Good places to start a weather briefing
Link to UAS Facility map
FAA DroneZone