1) since you are a muslim you can give talaq as per your personal law . you need not go to court .
2)for valid divorce there must be concrete reasons for divorce, settlement of mehr (money given by the husband before marriage), maintenance during iddat (the three months of abstinence after divorce) and return of the wife's belongings.
3) talaq should be preceded by attempts of reconciliation and pronounced in presence of witnesses
4) talaqnama should be sent to wife by registered post and must mention reasons for divorce .
5) it need not be on stamp paper
6) your wife can challenge talaq if no reasons mentioned for divorce . you will in such case have to lead evidence to show that talaq was given to her in presence of witnesses and her meher amount returned .
7) your wife can seek maintenance from you even after divorce .
8) better consult a local lawyer before you pronounce talaq