General Starter Motor Failed - How & Where do I access it

[FrazKTF]

Hi.
This morning, started as usual. Stopped at the shop, came out, the engine turned sluggishly once and then nothing. All electrics are on and strong.

Rocked it in gear but still no joy.
Bump started it just fine. Stopped on a hill and same story, so had to bump it.

To me, it seems like an electrical issue but not the battery.
Which is the Starter Relay? Are there any fuses to check?
It seems odd, just failing with no warning?

I've got the replacement Starter Motor but could anyone please tell me where the old starter is situated in the van and the best way to access it for removal? I fancy testing everything out before fitting the replacement

Are there any tips or tricks needed?

thanks