Reddit reviews English Grammar for Students of Russian: The Study Guide for Those Learning Russian (English grammar series)

Depending on what language you want to learn, there may be a book that explains the grammar you'll need for that language by connecting it to English. For example: German,
Spanish, Russian.

If there's a term that you're unfamiliar with, you can also poke around on Wikipedia to get a better idea behind some of the concepts. But when things get too technical, just keep looking up unfamiliar terminology and you'll be on your way.

For a little bit of fun, check out:
Split Ergativity,

where you can see this gem of a sentence:
>An example of split ergativity conditioned by tense and aspect is found in the Hindustani language (Hindi/Urdu), which has an ergative case on subjects in the perfective aspect for transitive verbs in the active voice, while in other aspects (habitual, progressive) subjects appear in the nominative case.

best book you could possibly buy is called English grammar for Students of Russian -

http://www.amazon.com/English-Grammar-Students-Russian-Learning/dp/0934034214

sets you straight in preparing you for the big differences between the languages

British Council: English Grammar gives explanations on everything grammatical; pronouns, possessives, adjectives, adverbs, verbs, nouns, phrases, clauses & sentence structures.

There is a book called English Grammar for Students of Russian but in the long run knowing English grammar inside-out is your best bet if you want to learn another language after Russian.

To stop getting distracted, reward yourself when you reach a goal in Russian to motivate yourself to carry on, also use Reddit to your advantage if you're ever back on Reddit why not pay /r/russian a visit?

I can't seem to find any reviews for Hugo Fluent in 3 months, Colloquial Russian is a very complete & comprehensive book on knowing no Russian to being conversationally fluent, so it's a good book to use as your main reference. Check out /r/Russian's wiki on getting started. for more help on getting started.

All the resources you've mentioned above, put emphasis on different aspects of Russian e.g. Grammar, Vocabulary, Orthography. I'd work through it one chapter at a time, try to practice/implement what you've learnt whenever you can & if it helps write down any notes. This is what I do with Icelandic & it seems to work.

Here's a step by step guide on using Assimil it uses Assimil: Dutch as the example but you can easily use the same process for Russian. Hopefully this helped :)

You might try English Grammar for Students of Russian. It's a good resource to help with the basics of the language, if that's what you need.

Sounds like this book is right up your alley. The language you choose won't matter if you don't understand its grammar, in fact that's what seems to be happening with your German. When you're comfortable with explanations of English and German grammar, only then should you move on to something more alien.

This series of book I've heard is good for English speakers understanding foreign grammar for the first time:

https://www.amazon.com/English-Grammar-Students-Russian-Learning/dp/0934034214