Well done on completing your 1st FL2 job.
The members on here have done some amazing work on their FL2s over the years - I'm often filled with admiration for what people are prepared to have a go at. I'll have a go at most mechanical things but fault finding modern electronics (canbus etc) is way outside my area of competence. Jules

Thank you! I'm usually happy to give all sorts of jobs a go, it's just I often forget how to put things back together

I think my next job is an oil/filter change (basic I know) followed by a good scrub/de-rust/clean on the undercarriage.

I can only dream of some of the things I've seen members attempt on here

The oil filter cap is awkward to get at.
My advice is to obtain a 27mm flexible ratchet spanner. I always approach it from underneath but others do it from above.
The plastic cap only needs to be nipped up but its always tight when you come to undoing it, so its easy to round off the plastic without a good fitting spanner/socket. Jules

+1 For flexible head ratchet spanner and getting at it from underneath  2014 Freelander 2 TD4 Manual Dynamic
1956/7 88" Series One Land Rover
1956/7 88" Series One Land Rover - undergoing restoration