welcome to the leo world!
getting started is a mine feild!!
i dont think leos get lonely. mine is by himself and seems happy!
i have him in an exo terra 45x45x60 cm and it is great! i would say for leos its not hight that is important but floor space. my gecko rarely climbs i have things he does climb up, like a big peice of bark! but he preffers to stay on the ground.
avoid pet shops if possible!! check any advise they give you with people on here before using it! no calsi sand pleasy!
finally, any specific Qs u have just ask on here! they are great.
i bought my leo on here and he is gorgous!!!
best of luck xxxx
xxx Queen Quack xxx
vet nurse in training
1 miniture poodle -eric
1 gorgous gordon gecko