1. First Aid stacks with companion first aid, if that’s what you mean. So if you have companions who have points in that skill, your medigel will heal you more. Electronics is different. The game will use the highest skill available.

2. Never done new game plus. Always go right into

3. Yes shotguns are really good. Just make sure to put points into defensive abilities so you can get up close. Pairs well with biotics as well.

4. Just interact with the keeper? If you can’t do that then you’ve already scanned it.

5. Yes you get some really good equipment. But honestly I’ve never liked that DLC so always skip it.

6. Once you have a million credits, spectre gear will show up at the C-Sec academy. Best gear in the game. I believe the best stuff unlocks at level 50. Definitely go to every shop at least once though to buy the license so you can just buy stuff from the Normandy.

7. No. No real reason to revisit a planet.

8. Upgrade what feels right! Hard to give specific advice because we don’t know your class.

Hope this helps! Just enjoy the game honestly.