Struggling to change gear, any help appreciated

[Revo79]

Help…. My 2012 Audi A3 manual. Struggling to change gear, especially putting in first gear, very stiff and have to force gearstick in to 1st. When I push clutch down, car starts vibrating a bit and even when clutch floored it still creeps the car forward. Any ideas what it is please? 

[Steve Q]

This could be an issue with the gear linkages or clutch. Is it smooth to engage the clutch? 

Is there any clutch slip etc?