Couple of quick tips for Stellaris.
If you don’t like hotkeys (especially research hotkey missing since some old version), it is easy to get it back. Go to Steam\steamapps\common\Stellaris\common\defines\
or just Stellaris\common\defines\
if you are no on steam. Here you will find 00_defines.txt
. Open it with notepad and go to around line 400 (or search for “TOPBAR_BUTTONS_SHORTCUTS”). You will see this text: