[Coldsaturn]

Don't worry at all, I know how confusing finding this info can get, so if I know the answer I'll happily help!

I would advise you to try to complete the daily tasks, if not for the fact that it will raise your level, on top of giving you nice rewards. It won't usually take me more than a few minutes to complete the entire thing:

1) Log in
2) Complete 1 bounty hunt - Mr. Beanie stage [I go with one in auto complete, so it costs me 8 stamina]
3) Complete 1 bounty hunt - Heartbreaker stage [I go with one in auto complete, so it costs me 8 stamina]
4) Buy items from the shop - every day you can take your free gift from the daily bag
5) Interact with him at Destiny Cafè - go in interaction mode and tap on him/trigger a dialogue
6) Upgrade your memory - if you can, you only need to raise 1 memory 1 level
7) Spend quality time with him for more than 5 minutes [I usually set it in the background for exactly 5 minutes. Choose whatever between study, work, or workout]
8) Gift Stamina to your friend [add people at random if you don't have friends yet, you'll get an automatic prompt when you login to claim and send stamina. You'll receive 30 stamina from this]
9) Complete 1 Core hunt stage [this costs more, 20 stamina, I just put an automatic battle for the levels I've already unlocked.]
10) Spend 100 stamina [I usually go through automatic Heartbreaker battles twice, so I spend 160 stamina. But you can go with one bulk of 80x and then three single automatic battles [spending that much stamina is already advised because if you hoard it you won't get the 240 passive stamina from just waiting it out during the day]]

So the smallest amount of stamina you'd be spending at the end of this would be 140. Actually 110 if you consider the 30 you receive back from the claim&send to friends activity. Also the free daily pack in the shop can randomly gift you stamina, but that's a matter of luck so I won't count it.

By spending 110 stamina you'll receive:
35000 exp point. These points are the ONLY way for your account level to go up.
10 bottle of wishes R
50 Promise mark (they count for the Promise tab [next to Daily and Weekly] which will give you more rewards)
10000 gold coins
2 blue magnets for the galaxy
1 speedup cube for the galaxy
50 red diamonds
10 core energy R to upgrade protocores
1 energy capsule to restore 30 stamina (so the daily count for spent stamina will actually be 80)

The weekly tasks are almost easier than the daily because they pile up in the span of a few days.
You need 100 points again:
1) Play claw machine 3 times
2) Play kitty cards 3 times
3) Claim the galaxy explorer rewards 5 times (you get 2 blue magnets per day by getting the daily rewards)
4) Complete Bounty Hunt 100 times (this counts double points, and if you do your daily tasks it goes by immediately)
5) Take 1 Snapshot
6) Shoot 1 Portrait
7) Complete 1 deduction in abyssal chaos (you've already unlocked it, go through 1 of the two missions with whatever companion you want, and this counts as double points)
8) Complete the weekly plan of quality time (do 1 workout and 1 study/work session with whichever companion you want - It pretty much automatically gets ticked off thanks to the daily tasks)