Lets cut down straight to the chase this post isnt about tutorial guidelines ,I am myself a fresher to android development and I am just sharing my experience.One of the things that frustated me the most was setting up the development environment.
Should I go with android studio or shall I stick with eclipse.Android studio sure has lots of features but as complete fresher you get majority of tutorials based on eclipse ide. Nevermind you can chose either of them frankly that doesnt make much difference

I have narrowed down few resource that one should consider if you wanna make most of your android learning curve

1. https://developers.google.com/android/
All you need is her but yeah sometimes implementation can be bit tricky. Google provied complete documentation of android constructs along with instructctions of setting up the environment

2.Slidenerd's Android tutorials for beginers
Slidenerd tutorials are great and you

could get some hands on the core concepts.
I strongly recommend you go through them.

3.https://www.thenewboston.com/

The tutorials here are bit old but still the cover almost all the basic topics of android development

In depth detail of individual topics may not be there

4.https://www.parse.com

If you decide to take your android development to the next level parse,com provide services to be used as the backend on any android application such as storing and retrieving data,push notification,etc

5.https://backendless.com/

Its an alternative to parse.com and basically provides similar features