I have had so much enjoyment out of elite , however other than travelling from A to B I wouldn't get this to play on a deck. performance isn't great and the screen is too small. it isn't a good experience.
get it if you may play on your pc but other than that there are better games for the deck.
as for the game. start off simple. do data courier missions .
when you want to get used to combat do it in low intensity resource extraction and you get steal kills off police NPC's.
don't ever fly without the insurance excess of your ship ....
check out inara website for lucrative trade runs or local sources of goods it also has.some good start ship builds.
https://coriolis.io allows you to plan your own more advanced builds.
consider setting up a home around diaguandri. Ray gateway has a good supply of stuff and deep discounts.
start working on ticking the boxes for the engineers as soon as you can. sooner or later you will want their services. if you can tick their requirement boxes in natural gameplay it helps rather than having to grind them out.
eventually credits probably won't be a worry but starting off every credit counts. when you sell a ship you lose 10% but you do not lose anything when you sell parts of a ship. so for max profit strip your ship before selling but remember parts are modular so if you have an a rated size 3 fuel scoop for instance you may want to store that and use on a future ship.
this is even more.important if you have engineered some of your gear. generally don't sell engineered gear unless you are certain you won't need.it.
if you bought odyssey (and anyone buying now just get that from cd keys it's cheap as chips) then once you have a ship with good jump range and a fuel scoop, exobiology will make you money fast. go to unexplored space and you will earn even more cash.