What is the correct way to use infinitive after the verb "help": with or without "to"?
What is the correct way to use infinitive after the verb "help": with or without "to"?

For example:

Please, help me to understand this.
or:
Please, help me understand this.

Question

What is the correct way to use infinitive after the verb "help": with or without "to"?
What is the correct way to use infinitive after the verb "help": with or without "to"?

For example:

Please, help me to understand this.
or:
Please, help me understand this.

Answer

Both are correct in speech and writing.  Adding "to" sounds a bit more formal.