Konichiwa

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Konnichiwa! こんにちは！

"Hello I am trying to learn Japanese, can you help me please?" is what I guessed ;) 

Unfortunately, the Japanese IME (that little 'locale'  thingy in your sidebar or taskbar) doesn't work as a translator. It's more like, let's say, a phonetic converter. If you were to were to type "Hello" in Japanese, you obviously need to know the romaji (latin alphabet) spelling of the word, which includes one of these major exceptions when it comes to typing Japanese on the computer. -

As you might know, the common transliteration for こんにちは is "konnichiwa". However in terms of grammar, the phoneme "wa" (in it's role of a topic marker particle and a limited number of other cases [this one]) is spelt as は ("ha" in Hiragana). 

Likewise, "watashi wa ____ desu." would also be spelt "watashi ha ____ desu."

Moving on: 

①　I am trying to learn Japanese.

Here are two different ways of saying that, keeping the grammar and overall complexity as simple as possible

- Option #1: Watashi wa nihongo ga benkyou shitai desu. [instead of ga, wo would be possible and is commonly used among younger people.] - 私は日本語が勉強したいです。　--> This rather means "I want to learn Japanese." 

- Option #2. Watashi wa nihongo wo benkyou shite miteimasu. [here, "nihongo" is the definite object and requires wo] - 私は日本語を勉強してみています。 
--> The pattern "-te miru / -te miteiru" indicates you're attempting. It has a different connotation, however. When an English speaker says "I'm trying!", as in "I'm making an effort to achieve something!", it's expressed slightly differently in Japanese. 

②　Can you help me, please?

Option #1:  tetsudatte kuremasen ka. - 手伝ってくれませんか。 --> "Won't you help me?"

Option #2:  dekiru dake, tetsudatte kuretara ureshii desu. できるだけ、手伝ってくれたら嬉しいです。 --> "dekirudake" is a phrase to say "only if it's possible", so the sentence translates to "If possible, I'd be happy if you helped me".

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I hope this was at least a bit helpful. Good luck learning Japanese :)