I have published a detailed tutorial on how to add AdSense in-feed ads to blogger. Please read all the details there.
Will publish an article for adding in-article ads to blogger blogs shortly.
They won’t make you much of the revenue but at least your unsold ad inventories will be covered using it such as your label pages, archive pages and homepage blog feed. On average if you receive one thousand visits per day from south Asian countries, you can expect $20/month revenue from In-feed ads alone