Please revise my Japanese letter?

I exchange letters with my Grandpa's friend... my teacher is away and my Japanese cries for help. Aside from mistakes, if there are any ways to just make it sound more natural or polite I would be very thankful. :)

銇撱倱銇仭銇紒銇婂厓姘椼仹銇欍亱銆?br> 銉斻儍銉勩儛銉笺偘銇亰澶╂皸銇伨銇熷瘨銇勩仹銇欍€傚厛閫便伅闆亴闄嶃仯銇︺€侀ⅷ銇屻伈銇┿亸鍚广亶銇俱仐銇熴€?..

鈥淎n Inconvenient Truth鈥濄仺鈥滳ensoring Science鈥濄倰瑾伩銇俱仜銈撱仹銇欏鏍°仹鑱炪亜銇熴亾銇ㄣ亴銇傘倞銇俱仚銆傜銈傚湴鐞冦倰淇濊銇椼仧銇?..

銇撱伄澶忋伀Concordia鈥檚 Japanese Credit Abroad銈掋仐銇熴亜銇с仚銆?銇ㄣ仸銈傞潰鐧姐亜銇с仚銇嬨倝銇溿伈鏃ユ湰銇銇嶃仧銇勩仹銇欍€?br>
銇┿亞銇炪亰鍏冩皸銇с€?br> -------
Hello! How are you?

The weather in Pittsburgh is still cold. Last week it was snowing and the wind was blowing hard. But its warmer now then it was last week.

I haven鈥檛 read 鈥淎n Inconvenient Truth鈥?and 鈥淐ensoring Science鈥?but I have heard of them in school. I also want to protect the world so someday I鈥檇 like to read them.

This summer I want to do Concordia鈥檚 Japanese Credit Abroad. It would be very interesting so I really want to go to Japan.

Take care of yourself.

Hello! How are you?
=銇撱倱銇仭銇? 銇婂厓姘椼仹銇欍亱?

The weather in Pittsburgh is still cold. Last week it was snowing and the wind was blowing hard. But its warmer now than it was last week.
=銉斻儍銉勩儛銉笺偘銇伨銇犲瘨銇勩仹銇? 鍏堥€便伅闆亴闄嶃倞, 棰ㄣ亴寮枫亱銇ｃ仧銇с仚.銇с倐, 浠娿伅鍏堥€便倛銈婃殩銇嬨亜銇с仚.

I haven鈥檛 read 鈥淎n Inconvenient Truth鈥?and 鈥淐ensoring Science鈥?but I have heard of them in school. I also want to protect the world so someday I鈥檇 like to read them.
= 銇俱仩 鈥淎n Inconvenient Truth鈥?銇?鈥淐ensoring Science鈥濄€€銇銈撱仹銇勩伨銇涖倱銇? 瀛︽牎銇с仢銈屻倝銇?[銇濄倢銈夈伄鏈琞 銇ゃ亜銇﹁仦銇勩仧銇撱仺銇屻亗銈娿伨銇? 涓栫晫銈掑畧銈娿仧銇勩仺銈傝€冦亪銇︺亜銈嬨伄銇? 銇勩仱銇嬭銇裤仧銇勩仺鎬濄仯銇︺亜銇俱仚.

This summer I want to do Concordia鈥檚 Japanese Credit Abroad. It would be very interesting so I really want to go to Japan.
= 銇撱伄澶忋伀Concordia鈥檚 Japanese Credit Abroad銇弬鍔犮仐銇熴亜銇с仚. 銇ㄣ仸銈傞潰鐧姐仢銇嗐仾銇仹, 銇溿伈鏃ユ湰銇銇嶃仧銇勩仹銇?

Take care of yourself.
=銇濄倢銇с伅 [銇┿亞銇瀅 銇婂厓姘椼仹,
銇婁綋銈掑ぇ浜嬨伀銇椼仸銇忋仩銇曘亜銇?br>
Hope this helps! :)

Konnichiwa! Ogenki desu ka?
correct :)

Pittsburgh no otenki wa mata samui desu.
otenki wa MADA samui desu.

Senshuu wa yuki ga futte, kaze ga hidoku suikimashita.
yukiga FUTTE, kaze ga hidoku FUITE IMASHITA.

Demo otenki wa senshuu yori ima no hou ga motto atsui desu.
demo ima wa senshuu yori mo atatakai desu. (atsui is hot. not warm)

鈥淎n Inconvient Truth鈥?to 鈥淐ensoring Science鈥?wo yomimasen desu gakkou de bunitakoto ga arimasu.
"~~~" to "~~~" wa mada yonde imasen ga, gakkou de kiitakoto ga arimasu.

Watashi mo sekai wo hogoshitai desu kara itsuka yomukoto wo ganpou nozomindeimasu.
watashi mo sekai wo mamorigai to omotte irunode, itsuka yomitai to omotte imasu. (hogoshitai is toooo formal.)

Kono natsu ni Concordia鈥檚 Japanese Credit Abroad wo shitaidesu.
correct. but what is concordia something? you better change 'shitai' to 'benkyou shitai' or 'sankashitai (=participate)' or something.

Totemo omoshiroi desu kara zehi nihon ni ikitaidesu.
totemo omoshiroi taiken ni naru desyou kara zehi.....

Douzo ogenki de.
correct


thanks for your e-mail :)