Lately i've been hearing two noises.

1) the first is from the engine - it kinda sounds like when your valves rattle when you put poor quality gas in your vehicle but i use nothing but premium and i throw in a fuel injector cleaner every few full ups.
The noise generally happens when you move off from a fullstop - and you hear it up until about 25MPH - like say up until the shift into 2nd gear - and right after the shift into 2nd thats like when you hear it the most, after that no more rattling - does anyone think its a problem with a valve? and the location of the noise seems to be more on the passenger side closer to the firewall.
2) the second noise comes from the rear - more specifically from around the passenger side rear wheel - it sounds like a clicking sound. Doesn't make the noise on smooth pavement - but if you hit a rough piece of road or so you hear it. I was thinking maybe the shocks need to change - i dunno - just wanted some advice/info/opinions/solutions
Thanks