Tagalog is an austroasian language which is modified form of Fillipino the national language of Philippines. Literal meaning of Tagalog is river-dweller and not much known about the history of this language. The first known book of Tagalog is Doctrina Cristiana which was written in around 1593. There are many websites which can teach you Tagalog online in your home, you can find them through search engines  some of them are absolutely free where as you have to pay some amount to learn Tagalog. To translate Tagalog to English there are many some of them can be summarize as below 

1. Firstly you should learn Tagalog through any teacher or any website then you can easily translate it to English
2. There are a lot of softwares which can translate Tagalog to English. You can find them through internet. You have to just search on search engines like Google, Yahoo or anyone else again some of them are paid sites to get the softwares. Where you can get it through online payment.
3. You can also translate Tagalog to English through online conversion method. In this you will find many online converters on internet which can easily translate your text to Tagalog. You have to just upload your text or write it to given space and they will convert it ot that language in which you want it.

On internet you can easily Translate Tagalog to English without paying any cost as when you use any particular site to convert any text in any desired language they got popularity thorough you're clicking and it will attract advertisers towards them and with this they can make good money. Again as Tagalog is modified form of Fillipino there are many modifications done in Tagalog also. Any language which passes through stages of development always changes its original form. As English is accepted as international language as it is primary language of many countries and majorly used as secondary language for almost ninety percentage countries of the world so any other language is to be Translated to get bigger recognisation.  So if you are a writer and want to publish your book you should use English as language because with this you can target more crowd which will promote you more.