grammar

[byron]

You are right in assuming the grammar is incorrect. Technically however it is a matter of common useage. The dropping of a word merely assumes the listener will understand the idiom.
The English language makes many such assumptions and abbreviates in this way. The only way to learn all these is to actually converse with English and/or Americans 'on the street'. In brief one learns to speak English technically and grammatically then by mixing with native speakers one learns the idiomatics.

[tqth]

Grammaticall, you can still use help sb do sth or help sb to do sth. No problem! You can use even in writing.

[Unknownsu]

When speaking, we would say, "I'll go find him." My question is this: Is it grammatically correct to connect go to another verb without using and or using to? Such as, "I'll go and find him." or "I'll go to find him." Or are all of these ways acceptable?

Omitting words or phrases in the English language necessary for a complete syntactical construction is called an ellipsis.