In reply to Mountain Spirit:
Savvas you whacky cat - try this, it's what just about every novice climber I know has done (including me):-
Step 1 - climb a route you know you can climb without falling off.
Step 2 - climb a route one grade harder.
Repeat step 2 until you fail to complete a climb.
Make a note of the grade of the hardest climb you succeeded at.
Repeat entire process next session ensuring you try different types of climb/wall type/holds if possible.
Take average grade of hardest climbs ticked over multiple sessions.
This is your approximate grade.
Climb lots of climbs at this grade and 1 or 2 grades above.
You should over time notice a creep into these higher grades - adjust approximate grade accordingly.
Enjoy!