The Main merits of holy day of Friday Jummah

"O Muslims! Allah Ta'ala has made this day-(Friday) a day of 'Eid'.
So have a bath on this day, whoever has perfume should apply it, and use the miswaak."

"Then when the (Jumu`ah) Salat is ended, you may disperse through the land, and seek the Bounty of Allah (by working), and remember Allah much: that you may be successful.'' (62:10) 

Friday is the best Day of the week. It is the Mothers of all days and the most virtuous in the sight of Allah.In the sight of Allah it has more greatness than Eid-ul-Fitr and Eid –ul-Adha (Reported in Ibn Majah)

Only that believer is graced with the blessings and benefits of Friday, who looks forward for it most anxiously and eagerly ; and wretched is the negligent one who is least interested in it and who does not even know in the morning which day has dawned ( Imam Ghazali says Ihya ul-Ulum) 

Main merits of holy day of Friday  

1. Allah created Adam alayhis salaam on Friday and he was granted entry into jannah on Friday.

2. Adam alayhis salaam was sent to earth on this day as his vicegerent.

3. Adam alayhis salaam died on a Friday.

4. There is a blessed hour on Friday during which a person is granted anything lawful and good by Allah that he prays for.

5. The blessed hour on Friday is such that Duas are answered and accepted,(from my research its an hour in 'Asr to Maghrib)

6. The Day of Qiyamah-Resurrection will be on a Friday. It is on this day that the Trumpet will be blown on Friday; There is neither any angels nearest to Allah nor any heaven nor the earth nor the wind and a sea but all of them fear the Day of Jummah,that is why everything in the heavens and the earth including God's most favourite angels and mountains, rivers etc. stand in awe of Friday.