A good chunk of Destiny 2 is Free2Play and you will be busy finding your way into the game due to te overwhelming amount of possibilities the game has to offer. After that you can buy a number of expansions:
- Destiny 2: Forsaken
...introduced year 2.
- Destiny 2: Shadowkeep
...introduced year 3.
- Destiny 2: Beyond Light
...is the current season and introduced year 4.
On top of that there are season passes, that will enable additional content for the respective season. For players playing Destiny 2 on a regular basis the expansions and season passes are well worth their money.
- Please do not use any overlays (Discord, Teamspeak, Xbox Game bar, GeForce Experience)
Bungie is a bit whiny about it and a ban because of cheating is just around the corner.
- Ensure you have a stable internet connection
Nobody likes if you drop out of a match early but that is probably your least problem as Bungie is watching closely and you are endangering your account.
...helps finishing quests and triumphs.
- D2 Checklist
...helps finding the best equipment.
- Destiny Item Manager
...helps managing your equipment.
...helps finding the best equipment as well but is stuffed with advertisements slowing the page resonsiveness down.