HELP w/02 SC Frontier Engine Detail

[02 SC Frontier]

I have a 2002 Supercharged Nissan Frontier. I want to clean the engine but I am unsure what I need to cover. I've looked through tons of old threads but my engine bay looks like its more "exposed." Anyways, can anybody tell me what I need to cover? Possibly with a paint program by circling it or whatever works. Can I just use car wash soap and an old sponge or should I just use a degreaser (what kind?) and then scrub and rinse off with a hose? Any help would be great. Thanks.

[metal]

Damn that does look kinda exposed. Start with the basic items, like your battery, alternator, distributor, etc