I s the anyone on the forum who does their own servicing in my area who would be prepared to talk my through it or maybe show me.
You've come to the right place. There are a few old seadogs on here that can talk you through it. If you've the necessary skills to repair your own car, then an outboard engine will be like second-nature.
For a 4hp 2-stroke service, I'd replace the impeller, renew gear oil, drain fuel filter (assuming there's one), renew spark plugs and check gap, grease propeller shaft and renew split pin, grease throttle and gear linkages, renew starter rope, clean carbs (if running rough), check thermostat (again assuming there's one). Ideally you want to get a service manual too.
Additional work also includes greasing the grease point nipples (you'll need a grease gun for the tilt mechanism and transom screw bolts), check the condition of the sacrificial anode (replace if necessary). If there salt-build up, poke a length of strimmer nylon cord into the tell-tale aperture, general wipe down with WD40 on a rag (not unlike cleaning a locomotive!!!).