Actually this is a very complicated structure and I will try to explain it item by item.
"-ce/-ca/-çe/-ça" suffixes generally add "belonging" meaning when it comes nearby words.
Let´s see:
1) Expressing an idea and expressing whom it belongs to:
Bence : In my opinion, according to me
Sence : In your opinion, according to you.
Bizce : In our opinion, according to us.
2) Belonging to a language:
Türkçe : Turkish
İngizilizce : English
Arapça : Arabic
Almanca : German
3) We sometimes turn verbs into nouns:
düşünmek: to think
düşünce : the thought
aldatmak: to cheat
aldatmaca : trick, cheating
4) Sometimes we use it for priority and belonging
ön: front
önce : before, first one, front one
böyle: so, thus, in this way
böylece : belonging to this way...
5) To cement the meaning of adjective
küçük ev: small home
küçükçe ev: considerably, pretty small home
uzun yol: long way
uzunca yol: considerably, pretty long way.
iyi: good
iyice : pretty good, considerably good. iyice yıka: wash them pretty good.
6) When talking about something that is done by a group
Sınıf: class
Sınıfça : by the class, doing something with whole the class
These are what I could remember for now. If remember another meanings or different kind of usages of this structure, I am going to add here.
thx
turkishcobra //
Thanks so much turkishcobra for that very clear and detailed explanation, I´ve come across words with this suffix a fair bit, and I could almost work out what it meant by looking at the meaning of the word from vocabulary lists, but I couldn´t really make sense of it properly, it seemed to vary from word to word, now I see that does give various meanings, I understand it so much better now, thanks a million 
))
