I'll have a go
Don't worry about that m8, getting on gear will do very little for you unless everything about your training regime is spot on. Training routine, diet & rest. Without these three all the gear in the world won't make you look any better.
As has been previously stated toning up is losing bodyfat to increase definition on muscles. I take when taking about toning up you're talking about achieving the type of "men's Heath" magazine look? If so those guys are weightlifters/bodsybuilders and have built the muscle and dieted down to get the definition, they haven't "toned" the muscle up to look like that
It sounds like you want to build muscle to get bigger then diet down. Not wanting to offend but you're in for some hard work. Most Trainers will probably recommend a routine based around compound exercises like:
squats & leg press, (legs)
barbell rowing & Chinups (back)
bench & incline bench pressing, (chest)
Shoulder pressing, (shoulders)
Close grip bench press & Lying Tricep Exetenions (triceps)
Barbell & Dumbell curls (biceps)
You'll flesh out your routine with isolation exercises depending on the equipment in your gym.
at the moment there's no point going crazy with the cardio until you've built the muscle then want to diet down, but at the same time still do a bit just to keep your aerobic fitness at an acceptable level.
Diet:
When wanting to build muscle you will need to take onboard more calories than your body would normally need Try and keep a balanced diet which is something around:
Carbs 50%
Protien 30%-35%
Fat 20%-15% Good fats (like Omega 3) that can be obtained from oily fish.
By the time you've built the muscle and want to diet down you will have worked out your diet and will know what to eat without me having to post it here
Goodluck m8