Along

Typical mistakes: 

All along the journey she kept complaining. 

Along the story, we learn how...

'Along' is used with nouns like road, river, corridor, line: words that refer to things with a long, thin shape. 

I saw her running along the road. 

His office is along the corridor. 

With more abstract words (or nouns that refer to time or activities), we use 'through'. 

Right through the meal...

Through the story, we learn how...

All through the journey... 

With words that refer to time, the structure 'all...long' is used. 

I'd like to live somewhere where the sun shines all year long. 

I could sit and look at you all day long. 

Also notice the special use of 'along' as an adverb in expression like 'Come along' (= Come with me) or 'walking along (= walking on one's way).