Take it slow, and read the hints the game is throwing at you. While you're in your starter Sidewinder (or in an ARX-bought ship), even dying is just a minor inconvenience, so "do all that you know and try all that you don't".
Apart from that - new players often find themselves short on Credits. There could/should be a Community Goal (CG) announced tomorrow, usually running for a week or so. Getting there in your unmodified starter Sidey could be a chore (you should have, or could earn, enough credits for a better FSD (Frame Shift Drive), that'd make the trip easier). But with the way the CGs have been run in the last time, that's an easy minimum of 50 MCr. waiting to be picked up (100 MCr. if it's a dual CG and you're not fussy about playing on both sides of the fence).
Ah - scratch that. There is a competitive CG running right now:
https://forums.frontier.co.uk/forums/elite-dangerous-community-goals/ and
https://inara.cz/elite/communitygoals/ that should go for two weeks. Tier 1 hasn't been reached yet, so we don't know yet what the payout will be - but, from the last CGs, 50 MCr. per side in the top 100% is a reasonable bet. All you need to do is to get your ship over to LP 855-34, equip some cargo racks, a mining laser and a refinery (optionally a collector limpet controller) and mine two tons of Platinum. Then sign up to both CGs and deliver one ton of Platinum to each of the CG stations.
Oh, and: if you actually want to succeed at delivering that Platinum, don't fly in Open. CGs usually bring out the seal clubbers, and your starter Sidey has no chance in PvP combat.
If the above is too confusing - you got up to two weeks (depending on the CG participation - they might end earlier) to find out what and how to do

. And from the payouts in this and the last CG, I have the suspicion that 4 more CGs of this type are lurking in the wings (there are 12 powers, we had Archer vs. Patreus in April and got Winters vs. Grom now, so there's 8 more that didn't have a go).
Edit:
Ok, so this is new:
So, you can only grab the cash from one side.