First off, welcome to the forum.
Another vote for Ian in London and Windswept Robert. Both have loads of good info while being easy to watch and understand.
If you haven’t taken tonthe skies yet, then imho, the best advice is to find somewhere open and quiet with no people or trees. Keep it close and just get a feel for for the sticks. Keep an eye on the battery, and return before you get battery low warnings. If there is a bit of wind fly away into it so you have it behind the drone on the way back.
Dont forget to have a look at Dronescene for places to fly and whether or not there are any restrictions in the area.
As for cases? Have a look here Back pack, rucksack, hard case and soft-case recommendations