I've played guitar longer than I've played bass (nearly 30 years). If you're gonna learn, don't go for some unusual tuning & learn it just as EADGBE. Treat it as a standard 4 string bass with an extra 2 strings up top.
For chords, start with CAGED, then learn F (your first bar chord). After that, it's fairly easy.
If you struggle with chords, do power chords or simple 2-3 note versions of chords.
I'd say learn as many instruments as you can. A guitarist is a guitarist, a bassist should be a musician