This page and its subpages provide gameplay/build information that I feel is important. Understanding these ideas will help you create your own builds and play optimally.
Disclaimer: some of this information is not true for the second game.
Save often and in different slots. You will sometimes fail or make mistakes and have to reload to get a desired outcome.
Quicksave before starting any conversation. Create a new save slot before going to a new area.
It is possible to miss out on items, quests, dialogue, and experience based on the order you complete objectives, or what you say in conversations.
Experience and credits are technically infinite.
Use the map menu often!
Using "return to hideout/ship" will instantly heal your entire party, and you can then use "transit back" to return to where you left off.
Party members can be hot-swapped using the "party selection" option during most parts of the game. Use this to bring in party members to use skills on demand.
Use the workbench to upgrade items. There is always a workbench in your home base. In general, items that can be upgraded are better.
Always remove your upgrades from items before selling them. The upgrade items are scarce and not unlimited!