best scripture to start with?

[wundermonk]

Hinduism is a religion where theology and philosophy are closely tied together. Theology informs philosophy and vice versa.

Hence, I would suggest a basic book on Indian/Hindu philosophy. Slowly you can then dive into scriptural theology.

[brahma jijnasa]

I don't even know what sect i'm interested in, i know which god/desses i'm interested in (Saraswati, Kali, Durga, Ganesha, Lakshmi, Krishna, Shiva) and i love Lord Ganesha....

Bhagavad gita is good to start with because it is considered a summary of all Vedic literature and philosophy, and perhaps Isha Upanishad because it is often considered the first on the list of major Upanishads. After those two, Vaishnavas usually prefer Śrīmad Bhāgavatam.
If you're interested in Vaishnava translation with commentary, I can recommend Srila Prabhupada's on http://vedabase.net/ :

Bhagavad-gītā http://vedabase.net/bg/en
Isha Upanishad (Īśopaniṣad) http://vedabase.net/iso/en
Bhāgavatam http://vedabase.net/sb/en

Newbies often can not decide what to read. Thus they often resort to any translation and commentary on Bhagavad gita and Upanishads even without knowing that there are various traditions or schools of thought. Thus reading them for a while they are often confused with explanations that can be even a mutually contradictory and exclusive because different traditions or schools of thought would translate and explain the scriptures differently.
Some time ago I discussed this with one newbie member here starting with post #18: http://www.hindudharmaforums.com/sho...053#post100053

When you find the translation and commentary you want to read, you should be aware to which tradition or school of thought is translator and writer of the commentary inclined. After some time, or even after several years, you'll be able to decide what seems more plausible to you.
I even know people who are thus newbies whole life.

regards